Location of Repository

Experimental plug&play quantum coin flipping

By Anna Pappa, Paul Jouguet, Thomas Lawson, André Chailloux, Matthieu Legré, Patrick Trinkler, Iordanis Kerenidis and Eleni Diamanti

Abstract

9 pages, 3 figuresPerforming complex cryptographic tasks will be an essential element in future quantum communication networks. These tasks are based on a handful of fundamental primitives, such as coin flipping, where two distrustful parties wish to agree on a randomly generated bit. Although it is known that quantum versions of these primitives can offer information-theoretic security advantages with respect to classical protocols, a demonstration of such an advantage in a practical communication scenario has remained elusive. Here, we experimentally implement a quantum coin flipping protocol that performs strictly better than classically possible over a distance suitable for communication over metropolitan area optical networks. The implementation is based on a practical plug&play system, designed for quantum key distribution. We also show how to combine our protocol with coin flipping protocols that are almost perfectly secure against bounded adversaries, hence enhancing them with a level of information-theoretic security. Our results offer a powerful toolbox for future secure quantum communications

Topics: [ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph]
Publisher: HAL CCSD
Year: 2013
OAI identifier: oai:HAL:hal-00841102v1
Provided by: Hal-Diderot
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • https://hal.archives-ouvertes.... (external link)
  • https://hal.archives-ouvertes.... (external link)
  • https://hal.archives-ouvertes.... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.